Lord_Uber_Dowzen: ...I was wondering if anyone had encountered this bug before and, if so, how to fix it?
The
Full Custom version of FIXT allows to customize "Days Left" for Water Chip timeout quest, or disable the timer entirely during installation.
If you only want the fixes and the time limit back, run Full Custom installation and when asked for the installation type choose CUSTOM. Even though there's a spoiler warning, the first customizations don't spoil anything (as long as you don't scroll down). 150 days limit is checked by default, all other entries are set ot default (like in the purist version) so just go on with the installation, without changing anything.
I was able to install the game with FIXT and the 150 days limit this way. It worked even when installing over a previously patched version (with FIXT FIXES ONLY) like yours. Anyway, I can't guarantee your old saves will still work and show the new set time limit. Make a backup of your whole Fallout installation first, if you fear to loose your saves.